Correlate Unfamiliar sign-in properties & atypical travel alerts

Status: available
Severity: high
Time window: 14d
Group by: AadTenantId, AadUserId, AccountObjectId, AccountTenantId
Source: github.com/Azure/Azure-Sentinel

'The combination of an Unfamiliar sign-in properties alert and an Atypical travel alert about the same user within a +10m or -10m window is considered a high severity incident.'

MITRE ATT&CK coverage

Tactic	Techniques
Initial Access	`T1078` Valid Accounts

Rule body kusto

id: a3df4a32-4805-4c6d-8699-f3c888af2f67
name: Correlate Unfamiliar sign-in properties & atypical travel alerts
description: |
  'The combination of an Unfamiliar sign-in properties alert and an Atypical travel alert about the same user within a +10m or -10m window is considered a high severity incident.'
severity: High
status: Available
requiredDataConnectors:
  - connectorId: AzureActiveDirectoryIdentityProtection
    dataTypes:
      - SecurityAlert (IPC)
  - connectorId: BehaviorAnalytics
    dataTypes:
      - IdentityInfo
queryFrequency: 1d
queryPeriod: 14d
triggerOperator: gt
triggerThreshold: 0
tactics:
  - InitialAccess
relevantTechniques:
  - T1078
query: |
    // We can use this configuration TimeDeltaInMinutes if you want to chnage the time window that we try to match the alerts
    let TimeDeltaInMinutes = 10;
    let Alert_UnfamiliarSignInProps = 
    SecurityAlert
    | where TimeGenerated > ago(1d)
    | where ProductName =~ "Azure Active Directory Identity Protection"
    | where AlertName =~ "Unfamiliar sign-in properties"
    | mv-expand Entity = todynamic(Entities)
    | where Entity.Type =~ "account"
    | extend AadTenantId = tostring(Entity.AadTenantId)
    | extend AadUserId = tostring(Entity.AadUserId)
    | join kind=inner (
    IdentityInfo
    | distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
    | extend UserName = AccountDisplayName
    | extend UserAccount = AccountUPN
    | where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
    | project AccountTenantId, AccountObjectId, UserAccount, UserName
    )
    on
    $left.AadTenantId == $right.AccountTenantId,
    $left.AadUserId == $right.AccountObjectId
    | extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
    | extend Alert_UnfamiliarSignInProps_Time = TimeGenerated
    | extend Alert_UnfamiliarSignInProps_Name = AlertName
    | extend Alert_UnfamiliarSignInProps_Severity = AlertSeverity
    | project AadTenantId, AadUserId, AccountTenantId, AccountObjectId, Alert_UnfamiliarSignInProps_Name, Alert_UnfamiliarSignInProps_Severity, Alert_UnfamiliarSignInProps_Time, UserAccount, UserName
    ;
    let Alert_AtypicalTravels = 
    SecurityAlert
    | where TimeGenerated > ago(1d)
    | where ProductName =~ "Azure Active Directory Identity Protection"
    | where AlertName =~ "Atypical travel"
    | mv-expand Entity = todynamic(Entities)
    | where Entity.Type =~ "account"
    | extend AadTenantId = tostring(Entity.AadTenantId)
    | extend AadUserId = tostring(Entity.AadUserId)
    | join kind=inner (
    IdentityInfo
    | distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
    | extend UserName = AccountDisplayName
    | extend UserAccount = AccountUPN
    | where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
    | project AccountTenantId, AccountObjectId, UserAccount, UserName
    )
    on
    $left.AadTenantId == $right.AccountTenantId,
    $left.AadUserId == $right.AccountObjectId
    | extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
    | extend Alert_AtypicalTravels_Time = TimeGenerated
    | extend Alert_AtypicalTravels_Name = AlertName
    | extend Alert_AtypicalTravels_Severity = AlertSeverity
    | extend ExtendedProperties_json= parse_json(ExtendedProperties)
    | extend CurrentLocation = tostring(ExtendedProperties_json.["Current Location"])
    | extend PreviousLocation = tostring(ExtendedProperties_json.["Previous Location"])
    | extend CurrentIPAddress = tostring(ExtendedProperties_json.["Current IP Address"])
    | extend PreviousIPAddress = tostring(ExtendedProperties_json.["Previous IP Address"])
    | extend Comments = tostring(ExtendedProperties_json.Comments)
    | extend RiskDetail = extract(@"(?i)risk detail:\s*(.+)$", 1, Comments)
    | where isempty(RiskDetail) or RiskDetail !contains "admin"
    | project AadTenantId, AadUserId, AccountTenantId, AccountObjectId, Alert_AtypicalTravels_Name, Alert_AtypicalTravels_Severity, Alert_AtypicalTravels_Time, CurrentIPAddress, PreviousIPAddress, CurrentLocation, Comments, PreviousLocation, UserAccount, UserName, CompromisedEntity
    ;
    Alert_UnfamiliarSignInProps
    | join kind=inner Alert_AtypicalTravels on UserAccount
    | where abs(datetime_diff('minute', Alert_UnfamiliarSignInProps_Time, Alert_AtypicalTravels_Time)) <= TimeDeltaInMinutes
    | extend TimeDelta = Alert_UnfamiliarSignInProps_Time - Alert_AtypicalTravels_Time
    | project UserAccount, AadUserId, Alert_UnfamiliarSignInProps_Name, Alert_UnfamiliarSignInProps_Severity, Alert_UnfamiliarSignInProps_Time, Alert_AtypicalTravels_Name, Alert_AtypicalTravels_Severity, Alert_AtypicalTravels_Time, TimeDelta, CurrentLocation, PreviousLocation, CurrentIPAddress, PreviousIPAddress, Comments, UserName
    | extend UserEmailName = split(UserAccount,'@')[0], UPNSuffix = split(UserAccount,'@')[1]
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: UserAccount
      - identifier: Name
        columnName: UserEmailName
      - identifier: UPNSuffix
        columnName: UPNSuffix
  - entityType: Account
    fieldMappings:
      - identifier: AadUserId
        columnName: AadUserId
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: CurrentIPAddress
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: PreviousIPAddress
customDetails:
    Alert1_Name: Alert_UnfamiliarSignInProps_Name
    Alert1_Time: Alert_UnfamiliarSignInProps_Time
    Alert1_Severity: Alert_UnfamiliarSignInProps_Severity
    Alert2_Name: Alert_AtypicalTravels_Name
    Alert2_Time: Alert_AtypicalTravels_Time
    Alert2_Severity: Alert_AtypicalTravels_Severity
    TimeDelta: TimeDelta
    CurrentLocation: CurrentLocation
    PreviousLocation: PreviousLocation
    CurrentIPAddress: CurrentIPAddress
    PreviousIPAddress: PreviousIPAddress
version: 1.0.9
kind: Scheduled

Stages and Predicates

Parameters

let TimeDeltaInMinutes = 10;

Let binding: `Alert_AtypicalTravels`

let Alert_AtypicalTravels = SecurityAlert
| where TimeGenerated > ago(1d)
| where ProductName =~ "Azure Active Directory Identity Protection"
| where AlertName =~ "Atypical travel"
| mv-expand Entity = todynamic(Entities)
| where Entity.Type =~ "account"
| extend AadTenantId = tostring(Entity.AadTenantId)
| extend AadUserId = tostring(Entity.AadUserId)
| join kind=inner (
IdentityInfo
| distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
| extend UserName = AccountDisplayName
| extend UserAccount = AccountUPN
| where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
| project AccountTenantId, AccountObjectId, UserAccount, UserName
)
on
$left.AadTenantId == $right.AccountTenantId,
$left.AadUserId == $right.AccountObjectId
| extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
| extend Alert_AtypicalTravels_Time = TimeGenerated
| extend Alert_AtypicalTravels_Name = AlertName
| extend Alert_AtypicalTravels_Severity = AlertSeverity
| extend ExtendedProperties_json= parse_json(ExtendedProperties)
| extend CurrentLocation = tostring(ExtendedProperties_json.["Current Location"])
| extend PreviousLocation = tostring(ExtendedProperties_json.["Previous Location"])
| extend CurrentIPAddress = tostring(ExtendedProperties_json.["Current IP Address"])
| extend PreviousIPAddress = tostring(ExtendedProperties_json.["Previous IP Address"])
| extend Comments = tostring(ExtendedProperties_json.Comments)
| extend RiskDetail = extract(@"(?i)risk detail:\s*(.+)$", 1, Comments)
| where isempty(RiskDetail) or RiskDetail !contains "admin"
| project AadTenantId, AadUserId, AccountTenantId, AccountObjectId, Alert_AtypicalTravels_Name, Alert_AtypicalTravels_Severity, Alert_AtypicalTravels_Time, CurrentIPAddress, PreviousIPAddress, CurrentLocation, Comments, PreviousLocation, UserAccount, UserName, CompromisedEntity;

The stages below define let Alert_UnfamiliarSignInProps (the rule's main pipeline source).

Stage 1: `source`

SecurityAlert

Stage 2: `where`

| where TimeGenerated > ago(1d)

Stage 3: `where`

| where ProductName =~ "Azure Active Directory Identity Protection"

Stage 4: `where`

| where AlertName =~ "Unfamiliar sign-in properties"

Stage 5: `mv-expand`

| mv-expand Entity = todynamic(Entities)

Stage 6: `where`

| where Entity.Type =~ "account"

Stage 7: `extend`

| extend AadTenantId = tostring(Entity.AadTenantId)

Stage 8: `extend`

| extend AadUserId = tostring(Entity.AadUserId)

Stage 9: `join`

| join kind=inner (
IdentityInfo
| distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
| extend UserName = AccountDisplayName
| extend UserAccount = AccountUPN
| where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
| project AccountTenantId, AccountObjectId, UserAccount, UserName
)
on
$left.AadTenantId == $right.AccountTenantId,
$left.AadUserId == $right.AccountObjectId

Stage 10: `extend` (4 consecutive steps)

| extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
| extend Alert_UnfamiliarSignInProps_Time = TimeGenerated
| extend Alert_UnfamiliarSignInProps_Name = AlertName
| extend Alert_UnfamiliarSignInProps_Severity = AlertSeverity

CompromisedEntity =

if(CompromisedEntity == "N/A" or isempty(CompromisedEntity))UserAccount

elseCompromisedEntity

Stage 11: `project`

| project AadTenantId, AadUserId, AccountTenantId, AccountObjectId, Alert_UnfamiliarSignInProps_Name, Alert_UnfamiliarSignInProps_Severity, Alert_UnfamiliarSignInProps_Time, UserAccount, UserName

The stages below run on Alert_UnfamiliarSignInProps (the outer pipeline).

Stage 12: `join`

Alert_UnfamiliarSignInProps
| join kind=inner Alert_AtypicalTravels on UserAccount

Stage 13: `where`

| where abs(datetime_diff('minute', Alert_UnfamiliarSignInProps_Time, Alert_AtypicalTravels_Time)) <= TimeDeltaInMinutes

Stage 14: `extend`

| extend TimeDelta = Alert_UnfamiliarSignInProps_Time - Alert_AtypicalTravels_Time

Stage 15: `project`

| project UserAccount, AadUserId, Alert_UnfamiliarSignInProps_Name, Alert_UnfamiliarSignInProps_Severity, Alert_UnfamiliarSignInProps_Time, Alert_AtypicalTravels_Name, Alert_AtypicalTravels_Severity, Alert_AtypicalTravels_Time, TimeDelta, CurrentLocation, PreviousLocation, CurrentIPAddress, PreviousIPAddress, Comments, UserName

Stage 16: `extend`

| extend UserEmailName = split(UserAccount,'@')[0], UPNSuffix = split(UserAccount,'@')[1]

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`AccountDisplayName`	is_not_null	(no value, null check)
`AlertName`	eq	`Atypical travel` `Unfamiliar sign-in properties`
`ProductName`	eq	`Azure Active Directory Identity Protection`
`RiskDetail`	is_null	(no value, null check)
`Type`	eq	`account`
`UserAccount`	is_not_null	(no value, null check)

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

Field	Source
`AadUserId`	`project`
`Alert_AtypicalTravels_Name`	`project`
`Alert_AtypicalTravels_Severity`	`project`
`Alert_AtypicalTravels_Time`	`project`
`Alert_UnfamiliarSignInProps_Name`	`project`
`Alert_UnfamiliarSignInProps_Severity`	`project`
`Alert_UnfamiliarSignInProps_Time`	`project`
`Comments`	`project`
`CurrentIPAddress`	`project`
`CurrentLocation`	`project`
`PreviousIPAddress`	`project`
`PreviousLocation`	`project`
`TimeDelta`	`project`
`UserAccount`	`project`
`UserName`	`project`
`UPNSuffix`	`extend`
`UserEmailName`	`extend`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)

Correlate Unfamiliar sign-in properties & atypical travel alerts

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Let binding: `Alert_AtypicalTravels`

Stage 1: `source`

Stage 2: `where`

Stage 3: `where`

Stage 4: `where`

Stage 5: `mv-expand`

Stage 6: `where`

Stage 7: `extend`

Stage 8: `extend`

Stage 9: `join`

Stage 10: `extend` (4 consecutive steps)

Stage 11: `project`

Stage 12: `join`

Stage 13: `where`

Stage 14: `extend`

Stage 15: `project`

Stage 16: `extend`

Indicators

Output fields

Keyboard shortcuts

Search operators

Correlate Unfamiliar sign-in properties & atypical travel alerts

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Let binding: Alert_AtypicalTravels

Stage 1: source

Stage 2: where

Stage 3: where

Stage 4: where

Stage 5: mv-expand

Stage 6: where

Stage 7: extend

Stage 8: extend

Stage 9: join

Stage 10: extend (4 consecutive steps)

Stage 11: project

Stage 12: join

Stage 13: where

Stage 14: extend

Stage 15: project

Stage 16: extend

Indicators

Output fields

Let binding: `Alert_AtypicalTravels`

Stage 1: `source`

Stage 2: `where`

Stage 3: `where`

Stage 4: `where`

Stage 5: `mv-expand`

Stage 6: `where`

Stage 7: `extend`

Stage 8: `extend`

Stage 9: `join`

Stage 10: `extend` (4 consecutive steps)

Stage 11: `project`

Stage 12: `join`

Stage 13: `where`

Stage 14: `extend`

Stage 15: `project`

Stage 16: `extend`